Fix Windows Update ‘Authentication Failed’ or ‘Password Incorrect’ Error - Fix Outlook Calendar Sync Issues on iPhone-BitLocker Drive Locked: Password Rejected Solutions

Updated 2026-06-17 21:15:44windows-fixes
Fix Windows Update ‘Authentication Failed’ or ‘Password Incorrect’ Error - Fix Outlook Calendar Sync Issues on iPhone-BitLocker Drive Locked: Password Rejected Solutions
Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

  • Restart the affected app after changing permissions or configuration files.
  • Test the same workflow in a clean browser profile or a temporary user account.
  • Compare the result on another network if the error may be connection related.